TL:DR; I was given an ThinkGeek Binary clock at christmas, and it was nice, and fun, but lacked the important things from my point of view that you need to be able to learn how the clock is telling the timeeasily.
Download BinaryClock Freeware - Rating: 4.47
This software offers a solution to users who want to organize events and todos via calendar. The events can be set on a daily, weekly or yearly basis. There is an option to remind you days before the events.
The software is designed for all kinds of individual, small scale and large scale rental businesses allowing easy organizing and tracking of all rental units and resources avoided a multitude of problems that are faced otherwise.
Use this contact manager to organize your telephone book, appointment schedule, and to do task list for better time management! Even share your contacts and data on a network without any extra or expensive server software. 21 day trial available.